"""
天翼云盘PC版客户端实现

基于tem目录下的设计思路重构的天翼云盘PC版客户端。
"""

import requests
import time
import uuid
import re
import json
import os
import base64
import threading
import xml.etree.ElementTree as ET
from typing import Dict, List, Optional, Any, Union, BinaryIO
from urllib.parse import urlparse, parse_qs, urlencode, quote
from datetime import datetime

from ..base import BaseCloudProvider, CloudFile, UploadResult, DownloadResult, FileType
from ..models import CloudFile as ModelCloudFile
from .utils import (
    TimeUtils, ClientUtils, CryptoUtils, SignatureUtils, 
    FormatUtils, CacheUtils
)

# 常量定义
ACCOUNT_TYPE = "02"
APP_ID = "8025431004"
CLIENT_TYPE = "10020"
VERSION = "6.2"

WEB_URL = "https://cloud.189.cn"
AUTH_URL = "https://open.e.189.cn"
API_URL = "https://api.cloud.189.cn"
UPLOAD_URL = "https://api.cloud.189.cn"

RETURN_URL = "https://m.cloud.189.cn/zhuanti/2020/loginErrorPc/index.html"

PC = "TELEPC"
MAC = "TELEMAC"

CHANNEL_ID = "web_cloud.189.cn"


class TianyiPCProvider(BaseCloudProvider):
    """天翼云盘PC版提供者"""
    
    def __init__(self, config: Dict[str, Any]):
        """
        初始化天翼云盘PC版客户端
        
        Args:
            config: 配置参数，包含username, password等
        """
        super().__init__(config)
        
        self.username = config.get('username', '')
        self.password = config.get('password', '')
        self.root_folder_id = config.get('root_folder_id', '-11')
        
        # 初始化会话
        self.session = requests.Session()
        self.session.headers.update({
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36',
            'Accept': 'application/json, text/plain, */*',
            'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
            'Accept-Encoding': 'gzip, deflate, br',
            'Connection': 'keep-alive',
        })
        
        # 登录状态
        self._logged_in = False
        self._session_data = {}
    
    def login(self) -> bool:
        """
        登录天翼云盘
        
        Returns:
            bool: 登录是否成功
        """
        try:
            # 第一步：获取登录页面
            login_url = f"{AUTH_URL}/api/logbox/oauth2/loginSubmit.do"
            
            # 获取登录参数
            params = self._get_login_params()
            if not params:
                return False
            
            # 加密密码
            encrypted_password = self._encrypt_password(self.password, params['public_key'])
            if not encrypted_password:
                return False
            
            # 构造登录数据
            login_data = {
                'accountType': ACCOUNT_TYPE,
                'userName': self.username,
                'password': encrypted_password,
                'validateCode': '',
                'captchaToken': params.get('captcha_token', ''),
                'returnUrl': RETURN_URL,
                'mailSuffix': '@189.cn',
                'dynamicCheck': 'FALSE',
                'clientType': CLIENT_TYPE,
                'cb_SaveName': '1',
                'isOauth2': 'false',
                'state': '',
                'paramId': params.get('param_id', '')
            }
            
            # 发送登录请求
            response = self.session.post(login_url, data=login_data)
            
            if response.status_code == 200:
                result = response.json()
                if result.get('result') == 0:
                    # 登录成功，获取重定向URL
                    redirect_url = result.get('toUrl', '')
                    if redirect_url:
                        # 访问重定向URL获取token
                        token_response = self.session.get(redirect_url)
                        if token_response.status_code == 200:
                            # 解析token信息
                            self._parse_token_info(token_response.text)
                            self._logged_in = True
                            return True
                else:
                    print(f"登录失败: {result.get('msg', '未知错误')}")
            
            return False
            
        except Exception as e:
            print(f"登录异常: {e}")
            return False
    
    def logout(self) -> bool:
        """
        登出天翼云盘
        
        Returns:
            bool: 登出是否成功
        """
        try:
            self._logged_in = False
            self._session_data.clear()
            self.session.cookies.clear()
            return True
        except Exception as e:
            print(f"登出异常: {e}")
            return False
    
    def list(self, path: str = "/", recursive: bool = False) -> List[CloudFile]:
        """
        列出文件和文件夹
        
        Args:
            path: 路径，默认为根目录
            recursive: 是否递归列出子目录
            
        Returns:
            List[CloudFile]: 文件列表
        """
        if not self._logged_in:
            if not self.login():
                return []
        
        try:
            # 将路径转换为文件夹ID
            folder_id = self._path_to_folder_id(path)
            
            # 获取文件列表
            files_data = self._get_files_list(folder_id)
            if not files_data:
                return []
            
            files = []
            for file_data in files_data:
                cloud_file = self._convert_to_cloud_file(file_data)
                if cloud_file:
                    files.append(cloud_file)
                    
                    # 如果是递归模式且当前是文件夹，继续获取子文件
                    if recursive and cloud_file.is_dir():
                        sub_files = self.list(cloud_file.path, recursive=True)
                        files.extend(sub_files)
            
            return files
            
        except Exception as e:
            print(f"列出文件异常: {e}")
            return []
    
    def upload(self, local_path: str, remote_path: str, 
               rapid_upload: bool = True) -> UploadResult:
        """
        上传文件
        
        Args:
            local_path: 本地文件路径
            remote_path: 远程文件路径
            rapid_upload: 是否尝试秒传
            
        Returns:
            UploadResult: 上传结果
        """
        if not self._logged_in:
            if not self.login():
                return UploadResult(False, message="登录失败")
        
        try:
            if not os.path.exists(local_path):
                return UploadResult(False, message="本地文件不存在")
            
            # 获取文件信息
            file_size = os.path.getsize(local_path)
            filename = os.path.basename(local_path)
            
            # 计算文件MD5
            file_md5 = self._calculate_file_md5(local_path)
            
            # 获取目标文件夹ID
            parent_id = self._path_to_folder_id(os.path.dirname(remote_path))
            
            # 尝试秒传
            if rapid_upload:
                rapid_result = self._try_rapid_upload(filename, file_size, file_md5, parent_id)
                if rapid_result:
                    return UploadResult(True, file_id=rapid_result, message="秒传成功", rapid_upload=True)
            
            # 普通上传
            upload_result = self._normal_upload(local_path, filename, parent_id)
            if upload_result:
                return UploadResult(True, file_id=upload_result, message="上传成功")
            else:
                return UploadResult(False, message="上传失败")
                
        except Exception as e:
            print(f"上传异常: {e}")
            return UploadResult(False, message=f"上传异常: {e}")
    
    def download(self, remote_path: str, local_path: str) -> DownloadResult:
        """
        下载文件
        
        Args:
            remote_path: 远程文件路径
            local_path: 本地保存路径
            
        Returns:
            DownloadResult: 下载结果
        """
        if not self._logged_in:
            if not self.login():
                return DownloadResult(False, message="登录失败")
        
        try:
            # 获取下载链接
            download_url = self.get_download_url(remote_path)
            if not download_url:
                return DownloadResult(False, message="获取下载链接失败")
            
            # 下载文件
            response = self.session.get(download_url, stream=True)
            if response.status_code == 200:
                # 确保目录存在
                os.makedirs(os.path.dirname(local_path), exist_ok=True)
                
                with open(local_path, 'wb') as f:
                    for chunk in response.iter_content(chunk_size=8192):
                        if chunk:
                            f.write(chunk)
                
                return DownloadResult(True, local_path=local_path, message="下载成功")
            else:
                return DownloadResult(False, message=f"下载失败: HTTP {response.status_code}")
                
        except Exception as e:
            print(f"下载异常: {e}")
            return DownloadResult(False, message=f"下载异常: {e}")
    
    def delete(self, remote_path: str) -> bool:
        """
        删除文件或文件夹
        
        Args:
            remote_path: 远程文件路径
            
        Returns:
            bool: 删除是否成功
        """
        if not self._logged_in:
            if not self.login():
                return False
        
        try:
            # 获取文件信息
            file_info = self.get_file_info(remote_path)
            if not file_info:
                return False
            
            # 调用删除API
            delete_url = f"{API_URL}/deleteFile.action"
            data = {
                'fileId': file_info.file_id,
                'familyId': self._session_data.get('family_id', ''),
            }
            
            response = self.session.post(delete_url, data=data)
            if response.status_code == 200:
                result = response.json()
                return result.get('success', False)
            
            return False
            
        except Exception as e:
            print(f"删除异常: {e}")
            return False
    
    def mkdir(self, path: str) -> bool:
        """
        创建文件夹
        
        Args:
            path: 文件夹路径
            
        Returns:
            bool: 创建是否成功
        """
        if not self._logged_in:
            if not self.login():
                return False
        
        try:
            # 获取父文件夹ID
            parent_path = os.path.dirname(path)
            parent_id = self._path_to_folder_id(parent_path)
            folder_name = os.path.basename(path)
            
            # 调用创建文件夹API
            mkdir_url = f"{API_URL}/createFolder.action"
            data = {
                'parentId': parent_id,
                'folderName': folder_name,
                'familyId': self._session_data.get('family_id', ''),
            }
            
            response = self.session.post(mkdir_url, data=data)
            if response.status_code == 200:
                result = response.json()
                return result.get('success', False)
            
            return False
            
        except Exception as e:
            print(f"创建文件夹异常: {e}")
            return False
    
    def move(self, src_path: str, dst_path: str) -> bool:
        """
        移动文件或文件夹
        
        Args:
            src_path: 源路径
            dst_path: 目标路径
            
        Returns:
            bool: 移动是否成功
        """
        # 天翼云盘PC版暂不支持移动操作
        return False
    
    def copy(self, src_path: str, dst_path: str) -> bool:
        """
        复制文件或文件夹
        
        Args:
            src_path: 源路径
            dst_path: 目标路径
            
        Returns:
            bool: 复制是否成功
        """
        # 天翼云盘PC版暂不支持复制操作
        return False
    
    def rename(self, src_path: str, new_name: str) -> bool:
        """
        重命名文件或文件夹
        
        Args:
            src_path: 源路径
            new_name: 新名称
            
        Returns:
            bool: 重命名是否成功
        """
        if not self._logged_in:
            if not self.login():
                return False
        
        try:
            # 获取文件信息
            file_info = self.get_file_info(src_path)
            if not file_info:
                return False
            
            # 调用重命名API
            rename_url = f"{API_URL}/renameFile.action"
            data = {
                'fileId': file_info.file_id,
                'fileName': new_name,
                'familyId': self._session_data.get('family_id', ''),
            }
            
            response = self.session.post(rename_url, data=data)
            if response.status_code == 200:
                result = response.json()
                return result.get('success', False)
            
            return False
            
        except Exception as e:
            print(f"重命名异常: {e}")
            return False
    
    def get_file_info(self, path: str) -> Optional[CloudFile]:
        """
        获取文件信息
        
        Args:
            path: 文件路径
            
        Returns:
            Optional[CloudFile]: 文件信息，不存在返回None
        """
        if not self._logged_in:
            if not self.login():
                return None
        
        try:
            # 通过路径查找文件
            parent_path = os.path.dirname(path)
            filename = os.path.basename(path)
            
            files = self.list(parent_path)
            for file in files:
                if file.name == filename:
                    return file
            
            return None
            
        except Exception as e:
            print(f"获取文件信息异常: {e}")
            return None
    
    def get_download_url(self, path: str) -> Optional[str]:
        """
        获取文件下载链接
        
        Args:
            path: 文件路径
            
        Returns:
            Optional[str]: 下载链接，失败返回None
        """
        if not self._logged_in:
            if not self.login():
                return None
        
        try:
            # 获取文件信息
            file_info = self.get_file_info(path)
            if not file_info or file_info.is_dir():
                return None
            
            # 调用获取下载链接API
            download_url = f"{API_URL}/getFileDownloadUrl.action"
            params = {
                'fileId': file_info.file_id,
                'familyId': self._session_data.get('family_id', ''),
            }
            
            response = self.session.get(download_url, params=params)
            if response.status_code == 200:
                result = response.json()
                return result.get('downloadUrl')
            
            return None
            
        except Exception as e:
            print(f"获取下载链接异常: {e}")
            return None
    
    def save_session(self, path: str) -> bool:
        """
        保存会话信息
        
        Args:
            path: 保存路径
            
        Returns:
            bool: 保存是否成功
        """
        try:
            session_data = {
                'cookies': dict(self.session.cookies),
                'session_data': self._session_data,
                'logged_in': self._logged_in
            }
            
            with open(path, 'w', encoding='utf-8') as f:
                json.dump(session_data, f, ensure_ascii=False, indent=2)
            
            return True
            
        except Exception as e:
            print(f"保存会话异常: {e}")
            return False
    
    def load_session(self, path: str) -> bool:
        """
        加载会话信息
        
        Args:
            path: 会话文件路径
            
        Returns:
            bool: 加载是否成功
        """
        try:
            if not os.path.exists(path):
                return False
            
            with open(path, 'r', encoding='utf-8') as f:
                session_data = json.load(f)
            
            # 恢复cookies
            for name, value in session_data.get('cookies', {}).items():
                self.session.cookies.set(name, value)
            
            # 恢复会话数据
            self._session_data = session_data.get('session_data', {})
            self._logged_in = session_data.get('logged_in', False)
            
            return True
            
        except Exception as e:
            print(f"加载会话异常: {e}")
            return False
    
    def is_rapid_upload_supported(self) -> bool:
        """
        是否支持秒传
        
        Returns:
            bool: 是否支持秒传
        """
        return True
    
    # 私有方法
    def _get_login_params(self) -> Optional[Dict[str, str]]:
        """获取登录参数"""
        # 实现获取登录参数的逻辑
        # 这里简化处理，实际需要从登录页面获取
        return {
            'public_key': '',
            'captcha_token': '',
            'param_id': ''
        }
    
    def _encrypt_password(self, password: str, public_key: str) -> Optional[str]:
        """加密密码"""
        # 实现密码加密逻辑
        # 这里简化处理，实际需要使用RSA加密
        return password
    
    def _parse_token_info(self, html: str):
        """解析token信息"""
        # 实现token解析逻辑
        pass
    
    def _path_to_folder_id(self, path: str) -> str:
        """将路径转换为文件夹ID"""
        if path == "/" or path == "":
            return self.root_folder_id
        # 这里简化处理，实际需要通过路径查找文件夹ID
        return self.root_folder_id
    
    def _get_files_list(self, folder_id: str) -> Optional[List[Dict[str, Any]]]:
        """获取文件列表"""
        # 实现获取文件列表的逻辑
        return []
    
    def _convert_to_cloud_file(self, file_data: Dict[str, Any]) -> Optional[CloudFile]:
        """转换为CloudFile对象"""
        try:
            file_type = FileType.FOLDER if file_data.get('isFolder') else FileType.FILE
            return CloudFile(
                file_id=file_data.get('id', ''),
                name=file_data.get('name', ''),
                size=file_data.get('size', 0),
                file_type=file_type,
                path=file_data.get('path', ''),
                md5=file_data.get('md5', ''),
                create_time=file_data.get('createTime', ''),
                modify_time=file_data.get('modifyTime', ''),
                parent_id=file_data.get('parentId', '')
            )
        except Exception as e:
            print(f"转换文件对象异常: {e}")
            return None
    
    def _calculate_file_md5(self, file_path: str) -> str:
        """计算文件MD5"""
        import hashlib
        md5_hash = hashlib.md5()
        with open(file_path, "rb") as f:
            for chunk in iter(lambda: f.read(4096), b""):
                md5_hash.update(chunk)
        return md5_hash.hexdigest()
    
    def _try_rapid_upload(self, filename: str, file_size: int, file_md5: str, parent_id: str) -> Optional[str]:
        """尝试秒传"""
        # 实现秒传逻辑
        return None
    
    def _normal_upload(self, local_path: str, filename: str, parent_id: str) -> Optional[str]:
        """普通上传"""
        # 实现普通上传逻辑
        return None